Occlusive vasculitis belongs to the category of gangrene in Chinese medicine (cold and numbness of the limbs at the beginning, then necrosis and shedding of the toe joints, black rot and ulceration, which does not heal for a long time), and there are formulas for treating this disease, such as Yanghe Tang, Taohong Siwu Tang, Simiao Yong’an Tang, Gubutang Tang, Bajian Tang, and so on. Gangrene caused by cold and damp obstruction can be seen as coldness and numbness of the toes, inconvenience in movement, fear of cold, pain aggravated by cold, intermittent claudication, pale skin and other conditions, which can be treated by taking Yanghe Tang. Yanghe Tang adverse reactions and contraindications are not clear. The gangrene caused by blood stasis and obstruction can be seen as toe swelling and pain, persistent pain, inconvenience in movement, purple and dark toes, drier skin of calf, muscle atrophy and other conditions, can take Tao Hong Si Wu Tang for treatment. The adverse effects and contraindications of Taohong Siwu Tang are not clear. Damp-heat toxin gathering due to gangrene can be seen in limb pain, daytime light, heavy at night, local skin purple, black, ulcerated, accompanied by fever, thirst, constipation and other conditions, you can take Si Miao Yong An Tang treatment. The adverse reactions and contraindications of Si Miao Yong An Tang are not clear. The gangrene caused by heat toxicity injury to yin can be seen as dry skin, muscle atrophy, thickening of toenails, dry mouth, thirst, constipation and other conditions, can take Gu Bu Tang for treatment. The adverse reactions and contraindications of Gu Bu Tang are not clear. The gangrene caused by deficiency of qi and blood can be seen as long duration of illness, difficult to heal wounds, muscle atrophy, dry skin, emaciation, emaciation, lethargy, fatigue and other conditions, can take Bazhen Tang for treatment. Adverse effects and contraindications of Bazhen Tang are not exact. Taking the above medicines needs the doctor’s guidance of diagnosis, and should not be used by oneself.